Mole Ratios Practice

Mole Ratios Practice

by Michael Baldwin

Multiple Choice

What is the H2 / H2O molar ratio?

• 1/1

• 2/1

• 1/2

• 4/2

Fill in the Blanks

Suppose you had 20 moles of H2 on hand and plenty of O2, how many moles of H2O could you make?

Multiple Choice

What is the O2 / H2O molar ratio?

• 1/1

• 1/2

• 2/1

• 2/3

Fill in the Blanks

Suppose you had 20 moles of O2 and enough H2, how many moles of H2O could you make?

​Balance this equation:   H2 +  S --->   H2S, and use the balanced equation to answer the questions that follow.

Multiple Choice

​Balance this equation:   H2 +  S --->   H2S, and then use the balanced equation to answer the question that follows:

How many moles of H2S will be produced from 15 moles of Sulfur?

• 7.5

• 15

• 30

• 60

Multiple Choice

​Balance this equation:   H2 +  S --->   H2S, and then use the balanced equation to answer the question that follows:

How many moles of H2S will be produced from 5 moles of hydrogen gas?

• 5

• 10

• 15

• 20

​Using Mole Ratios and Mass

​If one mole of H2 gas has a mass of 2.02 grams, then how many moles of H2O can be made with 8.08 moles of Hydrogen gas?

​

​ 2H2 + O2 => 2 H2O

​

​How many grams of water would be produced from the 8.08 moles of H2?

​Balance this equation:   N2 +    H2 --->  NH3, for the questions that follow.

Multiple Choice

 Balance this equation:   N2 +    H2 --->    NH3

If you used 1 mole of N2, how many moles of NH3 could be produced?

• 3

• 2

• 1

• 0.5

Multiple Choice

 Balance this equation:   N2 +    H2 --->    NH3

If 10 moles of NH3 were produced, how many moles of N2 would be required?

• 20

• 10

• 5

• 0.5

Multiple Choice

 Balance this equation:   N2 +    H2 --->    NH3

If 3.00 moles of H2 were used, how many moles of NH3 would be made?

• 6

• 3

• 2

• 0.5

Multiple Choice

 Balance this equation:   N2 +    H2 --->    NH3

If 0.600 moles of NH3 were produced, how many moles of H2 are required?

• 1.800

• 0.900

• 0.600

• 0.400